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#include <qpdf/Pl_QPDFTokenizer.hh>
#include <qpdf/BufferInputSource.hh>
#include <qpdf/QTC.hh>
#include <stdexcept>
Pl_QPDFTokenizer::Members::Members() :
filter(nullptr),
buf("tokenizer buffer")
{
}
Pl_QPDFTokenizer::Pl_QPDFTokenizer(
char const* identifier, QPDFObjectHandle::TokenFilter* filter, Pipeline* next) :
Pipeline(identifier, next),
m(new Members)
{
m->filter = filter;
QPDFObjectHandle::TokenFilter::PipelineAccessor::setPipeline(m->filter, next);
m->tokenizer.allowEOF();
m->tokenizer.includeIgnorable();
}
Pl_QPDFTokenizer::~Pl_QPDFTokenizer() // NOLINT (modernize-use-equals-default)
{
// Must be explicit and not inline -- see QPDF_DLL_CLASS in README-maintainer
}
void
Pl_QPDFTokenizer::write(unsigned char const* data, size_t len)
{
m->buf.write(data, len);
}
void
Pl_QPDFTokenizer::finish()
{
m->buf.finish();
auto input = std::shared_ptr<InputSource>(
// line-break
new BufferInputSource("tokenizer data", m->buf.getBuffer(), true));
while (true) {
QPDFTokenizer::Token token =
m->tokenizer.readToken(input, "offset " + std::to_string(input->tell()), true);
m->filter->handleToken(token);
if (token.getType() == QPDFTokenizer::tt_eof) {
break;
} else if (token.isWord("ID")) {
// Read the space after the ID.
char ch = ' ';
input->read(&ch, 1);
m->filter->handleToken(
// line-break
QPDFTokenizer::Token(QPDFTokenizer::tt_space, std::string(1, ch)));
QTC::TC("qpdf", "Pl_QPDFTokenizer found ID");
m->tokenizer.expectInlineImage(input);
}
}
m->filter->handleEOF();
QPDFObjectHandle::TokenFilter::PipelineAccessor::setPipeline(m->filter, nullptr);
Pipeline* next = this->getNext(true);
if (next) {
next->finish();
}
}
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